Solve problems involving scale drawings of geometric figures

What you'll learn

1. Interpret a scale drawing by identifying the scale ratio and explaining what it means in context (e.g., 1 cm on the drawing represents 5 m in reality).
2. Use the scale ratio as a proportional relationship to compute actual lengths from measured drawing lengths.
3. Use the scale ratio to compute drawing lengths from known actual lengths (the reverse direction).
4. Compute the actual area of a figure from a scale drawing, recognizing that area scales by the square of the linear scale factor.
5. Reproduce a given scale drawing at a new (larger or smaller) scale by computing new drawing lengths systematically.
6. Solve multi-step real-world problems involving scale drawings, including floor plans, maps, and architectural diagrams.

Prerequisites

• Recognize and represent proportional relationships between quantities